metadata

language:
  - en
license: other
license_name: flux-1-dev-non-commercial-license
license_link: LICENSE.md
extra_gated_prompt: >-
  By clicking "Agree", you agree to the [FluxDev Non-Commercial License
  Agreement](https://huggingface.co/black-forest-labs/FLUX.1-dev/blob/main/LICENSE.md)
  and acknowledge the [Acceptable Use
  Policy](https://huggingface.co/black-forest-labs/FLUX.1-dev/blob/main/POLICY.md).
tags:
  - text-to-image
  - image-generation
  - flux
widget:
  - text: >-
      An authentic winter photograph capturing the serene beauty of a small
      rural village after an overnight snowfall. In the foreground, uneven snow
      blankets a dirt path, with scattered footprints leading toward a cluster
      of old wooden houses. The rooftops are imperfectly covered in snow, with
      some areas exposed, revealing weathered shingles underneath. A crooked
      wooden fence lines the path, parts of it buried under snowdrifts, while a
      rusty metal bucket and a broken sled lie abandoned near the side of the
      road. Bare tree branches, heavy with frost and patches of clinging snow,
      frame the scene, their shapes irregular and natural.  The middle ground
      shows a small frozen stream partially covered in thin, cracked ice, with
      tufts of dried grass poking through the edges. The snow is not uniformly
      white; traces of dirt and fallen leaves are visible where the wind has
      swept the surface clean. Shadows cast by the trees and houses are long and
      faintly tinged with blue, consistent with the low angle of the pale winter
      sun.  In the background, a faint haze softens the view of distant rolling
      hills and a few scattered trees. Smoke curls lazily from a chimney,
      dissipating into the cold, crisp air. The soft golden light of the morning
      sun filters through a thin veil of clouds, highlighting the texture of the
      snow and creating subtle contrasts between the illuminated and shaded
      areas. This meticulously detailed and slightly imperfect composition
      captures the natural, unpolished charm of a real-life winter scene.
    output:
      url: images/example_dtwn0muaz.png

FLUX.1 [dev] is a 12 billion parameter rectified flow transformer capable of generating images from text descriptions. For more information, please read our blog post.

Key Features

Cutting-edge output quality, second only to our state-of-the-art model FLUX.1 [pro].
Competitive prompt following, matching the performance of closed source alternatives .
Trained using guidance distillation, making FLUX.1 [dev] more efficient.
Open weights to drive new scientific research, and empower artists to develop innovative workflows.
Generated outputs can be used for personal, scientific, and commercial purposes as described in the FLUX.1 [dev] Non-Commercial License.

Usage

We provide a reference implementation of FLUX.1 [dev], as well as sampling code, in a dedicated github repository. Developers and creatives looking to build on top of FLUX.1 [dev] are encouraged to use this as a starting point.

API Endpoints

The FLUX.1 models are also available via API from the following sources

bfl.ml (currently FLUX.1 [pro])
replicate.com
fal.ai
mystic.ai

ComfyUI

FLUX.1 [dev] is also available in Comfy UI for local inference with a node-based workflow.

Diffusers

To use FLUX.1 [dev] with the 🧨 diffusers python library, first install or upgrade diffusers

pip install -U diffusers

Then you can use FluxPipeline to run the model

import torch
from diffusers import FluxPipeline

pipe = FluxPipeline.from_pretrained("black-forest-labs/FLUX.1-dev", torch_dtype=torch.bfloat16)
pipe.enable_model_cpu_offload() #save some VRAM by offloading the model to CPU. Remove this if you have enough GPU power

prompt = "A cat holding a sign that says hello world"
image = pipe(
    prompt,
    height=1024,
    width=1024,
    guidance_scale=3.5,
    num_inference_steps=50,
    max_sequence_length=512,
    generator=torch.Generator("cpu").manual_seed(0)
).images[0]
image.save("flux-dev.png")

To learn more check out the diffusers documentation

Limitations

This model is not intended or able to provide factual information.
As a statistical model this checkpoint might amplify existing societal biases.
The model may fail to generate output that matches the prompts.
Prompt following is heavily influenced by the prompting-style.

Out-of-Scope Use

The model and its derivatives may not be used

In any way that violates any applicable national, federal, state, local or international law or regulation.
For the purpose of exploiting, harming or attempting to exploit or harm minors in any way; including but not limited to the solicitation, creation, acquisition, or dissemination of child exploitative content.
To generate or disseminate verifiably false information and/or content with the purpose of harming others.
To generate or disseminate personal identifiable information that can be used to harm an individual.
To harass, abuse, threaten, stalk, or bully individuals or groups of individuals.
To create non-consensual nudity or illegal pornographic content.
For fully automated decision making that adversely impacts an individual's legal rights or otherwise creates or modifies a binding, enforceable obligation.
Generating or facilitating large-scale disinformation campaigns.

License

This model falls under the FLUX.1 [dev] Non-Commercial License.